Dr. Esselsyn (pictured, right, also happens to be Engine 2 Dietauthor Rip Esselstyn's dad) starts by saying, "If the truth were known, that coronary artery disease is a toothless paper tiger that need never exist. And if it does exist, it need never, ever progress."

Dr. Ornish adds "In more than 33 years of research, we've shown that simple changes that we make in our lives, like what we eat, how we respond to stress, how much exercise we get, and how much love and support we have, can actually begin to reverse—not just prevent, but actually reverse—chronic diseases like heart disease."